Triboelectric nanogenerator as an active UV photodetector
Journal
Advanced Functional Materials
Journal Volume
24
Journal Issue
19
Date Issued
2014-05-21
Author(s)
Abstract
Self-powered nanosensors and nanosystems have attracted significant attention in the past decades and have gradually become the most desirable and promising prototype for environmental protection/detection because no battery is needed to power the device. Therefore, in this paper a design is proposed for a self-powered photodetector based on triboelectric nanogenerator (TENG) configuration. 3D dendritic TiO2 nanostructures are synthesized as the built-in UV photodetector as well as the contact material of the TENG. The cost-effective, robust, and easily fabricated TENG-based photodetector presents superior photoresponse characteristics, which include an excellent responsivity over 280 A W-1, rapid rise time (18 ms) and decay time (31 ms), and a wide detection range of light intensity from 20 μW cm-2 to 7 mW cm-2. In the last part of the paper, a stand-alone and self-powered environmental sensing device is developed by applying poly(methyl methacrylate) (PMMA) substrates and springs to assemble the TENG-based photodetector. These results indicate that the new prototype sensing device based on the TENG configuration shows great potential as a self-powered photodetector. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Subjects
nanogenerators | photodetectors | self-powered devices
SDGs
Type
journal article